Lebanese health authorities have raised the death toll from two days of Israeli airstrikes targeting Hezbollah militants to 558. Palestinian officials in Gaza also reported that a new Israeli strike killed at least seven people. Israel's military says it will do 'whatever is necessary' to push Hezbollah away from Lebanon's border with Israel. Thousands of people have fled southern Lebanon, causing a major exodus. Hezbollah has retaliated by launching projectiles towards Israel.